BCEM 393 UPDATED Exam Questions and CORRECT Answers
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Course
BCEM 393
Institution
BCEM 393
BCEM 393 UPDATED Exam Questions
and CORRECT Answers
Which AA has an H as the R group - CORRECT ANSWER- glycine
What are the three and one letter codes for glycine? - CORRECT ANSWER- GLY, G
Which AA has a methyl group as the side chain - CORRECT ANSWER- Alanine
What are the one and three lette...
BCEM 393 UPDATED Exam Questions
and CORRECT Answers
Which AA has an H as the R group - CORRECT ANSWER✔✔- glycine
What are the three and one letter codes for glycine? - CORRECT ANSWER✔✔- GLY, G
Which AA has a methyl group as the side chain - CORRECT ANSWER✔✔- Alanine
What are the one and three letter codes for Alanine - CORRECT ANSWER✔✔- Ala, A
how many hydrophobic AAs are there? - CORRECT ANSWER✔✔- 9
are hydrophobic amino acids really hydrophobic? - CORRECT ANSWER✔✔- No - just their
side chains are relative to the hydrophilic and charged side chains of other AAs
What is the AA with essentially an isopropyl side chain (and the three letter code and single
letter code) - CORRECT ANSWER✔✔- Valine, VAL, V
What is the amino acid that is like valine but adds a CH2 in before the V? - CORRECT
ANSWER✔✔- Leucine, LEU, L
What kind of isomer of leucine is isoleucine? - CORRECT ANSWER✔✔- Constitutional
Describe the side chain of isoleucine and its 3 and 1 letter codes - CORRECT ANSWER✔✔-
essentially a valine with one methyl and one ethyl group making up the V rather than two
methyls. ILE, I
is the ring in proline planar? - CORRECT ANSWER✔✔- No
, How many carbons are in the proline ring? Where are they attached? What are its three and
one letter codes? - CORRECT ANSWER✔✔- it is a 5 membered ring with three carbons
(excluding the alpha carbon which would technically mean it has four carbons). They attach
the alpha carbon to the amine group of the AA. PRO, P
What is the AA with a methylthio ethane side chain? What are its three and one letter codes? -
CORRECT ANSWER✔✔- Methionine, MET, M
What is the AA with a phenyl group side chain - CORRECT ANSWER✔✔- phenylalanine,
PHE, F
is the P amino acid proline or phenylalanine? - CORRECT ANSWER✔✔- Proline.
Phenylalanine is F (as in F**k phenylalanine)
What is the AA with an indole group as its side chain - CORRECT ANSWER✔✔-
Tryptophan, TRP, W (WHY THE HELL DOES TRYP HAVE W)
Where is the amino group in the indole in tryptophan? - CORRECT ANSWER✔✔- across
from the alanine methyl group
What are the 9 hydrophobic amino acids - CORRECT ANSWER✔✔- Valine, Glycine,
Leucine, Isoleucine, Alanine, Phenylalanine, tryptophan, methionine, proline
What is the general ending of AAs that have a hydroxyl group in the side chain? - CORRECT
ANSWER✔✔- ine - serine, threonine, tyrosine`
Which AA is like phenylalanine but with an OH added across from the alanine methyl? -
CORRECT ANSWER✔✔- Tyrosine, Tyr, Y
Whhich AA is like alanine but with an OH attached? - CORRECT ANSWER✔✔- Serine,
SER, S
Which AA is like valine but with an OH replacing one of the ends of the V - CORRECT
ANSWER✔✔- Threonine, THR, T
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